public function getInstance(AmazonPay $module) {
        $instance = null;
        $theme = AmazonPay::getThemeConfig()['name'];
        switch ($theme) {
            case 'beldad':
                $instance = new Themes\Beldad($module);
                break;
            case 'voll':
                $instance = new Themes\Voll($module);
                break;
            case 'panetteria':
                $instance = new Themes\Panetteria($module);
                break;
            default:
                $instance = new PayOnly($module);
                break;
        }

        return $instance;
    }